Я чувствую аромат цветов.

That is a very common question. Чувствовать means to feel, sense, perceive. In Russian, that verb is often used for smells too.

So:

• Я чувствую аромат цветов = literally I feel/sense the aroma of flowers
• natural English = I smell the aroma/scent of flowers

Russian often uses чувствовать where English uses smell.

Чувствую is the 1st person singular present tense form of чувствовать.

So:

• чувствовать = to feel / to sense
• я чувствую = I feel / I sense / I smell

The ending -ю shows I.

Аромат is the direct object, so it is in the accusative case.

However, for masculine inanimate singular nouns, the accusative often looks exactly like the nominative.

So:

• nominative: аромат
• accusative: аромат

That is why the word does not change here.

Because аромат цветов means the aroma of flowers.

In Russian, when one noun depends on another like of flowers, the second noun is often put in the genitive case.

So:

• цветы = flowers (nominative plural)
• цветов = of flowers (genitive plural)

That is why you get:

• аромат цветов = the aroma of flowers

Because the sentence is talking about flowers in general, not one single flower.

Compare:

• аромат цветка = the aroma of a flower / of one flower
• аромат цветов = the aroma of flowers

So цветов is the genitive plural form.

Russian does not have articles like English a/an and the.

So in Russian, аромат цветов can mean:

• an aroma of flowers
• the aroma of flowers
• sometimes simply flower aroma / the scent of flowers

The exact meaning depends on context.

Yes. Russian often leaves out subject pronouns when they are already clear from the verb form.

So both of these are possible:

• Я чувствую аромат цветов.
• Чувствую аромат цветов.

The ending -ю already tells you the subject is I.

Including я can add a little emphasis or simply sound more explicit.

Yes, absolutely.

The difference is mainly in tone:

• запах = smell / scent (more neutral)
• аромат = aroma / fragrance (usually pleasant, often more poetic or refined)

So:

• Я чувствую запах цветов = neutral, very common
• Я чувствую аромат цветов = more pleasant, more expressive

Because нюхать means to sniff or to smell something intentionally.

Compare:

• Я чувствую аромат цветов = I smell / sense the aroma of flowers
  (the smell reaches you)
• Я нюхаю цветы = I am sniffing the flowers
  (you actively bring them close and smell them)

So чувствовать is about perception, while нюхать is about the action of sniffing.

Чувствовать is imperfective.

Here that makes sense because the sentence describes an ongoing perception or state: I am sensing/smelling something.

The related perfective verb is often почувствовать, which means to begin to feel / to notice / to catch a sensation.

Compare:

• Я чувствую аромат цветов. = I smell / I can smell the aroma of flowers.
• Я почувствовал аромат цветов. = I caught the aroma of flowers / I suddenly smelled the aroma of flowers.

Yes. Russian word order is more flexible than English word order.

The neutral order here is:

• Я чувствую аромат цветов.

But you may also see:

• Аромат цветов я чувствую.
• Я аромат цветов чувствую.

The basic meaning stays similar, but the emphasis changes. The original version is the most neutral and natural for learners to use first.

The stressed words are:

• Я чу́вствую арома́т цвето́в.

Stress falls on:

• чу́вствую
• арома́т
• цвето́в

Learning the stress is important in Russian because it is not always predictable.