Sein Parfüm duftet angenehm, aber heute ist es ein bisschen zu stark.

Because Parfüm is a neuter singular noun in German: das Parfüm.

The possessive determiner sein- changes its ending depending on the noun it goes with. For a neuter singular noun in the nominative case, the correct form is sein:

• sein Hund → masculine
• seine Tasche → feminine
• sein Parfüm → neuter
• seine Schuhe → plural

So here, sein Parfüm means his perfume.

duftet is the 3rd person singular form of duften, which means to smell pleasant or to give off a pleasant fragrance.

That is an important nuance: duften is usually positive. It suggests that something smells nice.

Compare:

• Das Parfüm duftet angenehm. → The perfume smells pleasant.
• Das Essen riecht gut. → The food smells good.
• Der Müll stinkt. → The trash stinks.

So duften is more specific than English smell, because English smell can be positive, neutral, or negative, while duften is normally positive.

Because angenehm is being used as an adverb, not as an adjective directly before a noun.

In the sentence:

• Sein Parfüm duftet angenehm.

angenehm describes how the perfume smells, so it modifies the verb duftet. Adverbs in German do not take adjective endings.

Compare:

• ein angenehmer Duft → adjective before a noun, so it takes an ending
• Das Parfüm duftet angenehm. → adverb, so no ending

This is very similar to English pleasantly, although German often uses the plain adjective form in adverbial function.

Because aber here connects two main clauses, and in standard German, these are separated by a comma.

The two clauses are:

1. Sein Parfüm duftet angenehm
2. aber heute ist es ein bisschen zu stark

This is normal punctuation with coordinating conjunctions like aber, especially when the clauses are complete and have their own verb.

So the comma helps show the division clearly.

Because German follows the verb-second rule in main clauses.

In a normal main clause, the conjugated verb must come in the second position. If you put heute first for emphasis or time reference, then the verb must come immediately after it:

• Heute ist es ein bisschen zu stark.

Structure:

• Position 1: heute
• Position 2: ist
• then: es ein bisschen zu stark

You cannot say:

• Heute es ist ... ❌

Compare:

• Es ist heute ein bisschen zu stark.
• Heute ist es ein bisschen zu stark.

Both are correct, but the second one emphasizes today more strongly.

es refers back to das Parfüm, or more naturally, to the perfume’s scent/effect.

Since Parfüm is a neuter noun, the pronoun used for it is es.

So:

• das Parfüm → es

German often uses the pronoun even where English might repeat the noun less formally or think more about the smell itself. Here, es is completely natural.

Here zu means too.

So:

• stark = strong
• zu stark = too strong

This is a very common German pattern:

• zu laut = too loud
• zu teuer = too expensive
• zu schnell = too fast

In the sentence, ein bisschen zu stark means a little too strong.

So the idea is: the perfume smells pleasant in general, but today it is slightly too strong.

ein bisschen means a little or a bit.

It softens the statement:

• zu stark = too strong
• ein bisschen zu stark = a little too strong

This makes the sentence sound less harsh and more natural in everyday speech.

You will also often hear:

• ein wenig = a little
• etwas = somewhat / a little

For example:

• Es ist etwas zu laut.
• Es ist ein wenig zu teuer.
• Es ist ein bisschen zu stark.

All are similar, though ein bisschen is especially common in spoken German.

Yes, that is possible, and it would be understandable.

But there is a nuance:

• duften strongly suggests a pleasant fragrance
• riechen is more neutral and broader; it simply means to smell

So:

• Sein Parfüm duftet angenehm. → very natural for perfume, and clearly positive
• Sein Parfüm riecht angenehm. → also possible, but a bit less elegant or specific

With perfume, duften fits especially well because perfume is something meant to smell nice.

Because it already has a possessive determiner: sein.

In German, you normally do not use an article together with a possessive in this kind of structure.

So you say:

• sein Parfüm = his perfume
• not das sein Parfüm ❌

This works the same way as in English:

• his perfume
• not the his perfume ❌

Yes, it adds an important nuance.

Without heute:

• Sein Parfüm duftet angenehm, aber es ist ein bisschen zu stark.

This sounds more like a general judgment: the perfume is pleasant, but overall a bit too strong.

With heute:

• Sein Parfüm duftet angenehm, aber heute ist es ein bisschen zu stark.

This suggests that today, on this particular occasion, he may have put on too much, or the scent feels stronger than usual.

So heute makes the statement more temporary and situation-specific, rather than a permanent opinion about the perfume.

In meaning, it refers to the strength of the scent.

German often allows this kind of shorthand. Literally, the pronoun es refers to das Parfüm, but what is really being judged as zu stark is the perfume’s smell or intensity.

English does something similar:

• This perfume is too strong.

You do not necessarily mean the liquid itself is physically strong; you mean the scent is too intense. German works the same way here.

It has two main clauses joined by aber:

1. Sein Parfüm duftet angenehm
2. aber heute ist es ein bisschen zu stark

A simple breakdown:

• Sein Parfüm = subject
• duftet = verb
• angenehm = adverb

Then:

• aber = but
• heute = time expression
• ist = verb
• es = subject pronoun
• ein bisschen = modifier
• zu stark = predicate adjective phrase

So it is a very typical German sentence pattern: statement + aber + contrasting statement.