Η μυρωδιά προκαλεί αηδία.

• Η = the
• μυρωδιά = smell / odor / scent
• προκαλεί = causes
• αηδία = disgust / revulsion / nausea

So grammatically:

• Η μυρωδιά is the subject: the smell
• προκαλεί is the verb: causes
• αηδία is the direct object: disgust

The sentence has a very straightforward subject + verb + object structure.

Η is the feminine singular definite article, meaning the.

It is used because μυρωδιά is a feminine singular noun. So:

• η μυρωδιά = the smell

Greek articles must agree with the noun in gender, number, and case.

Yes, μυρωδιά is feminine.

You can tell in this sentence because it takes the feminine article η. Also, many Greek nouns ending in -ά / -ιά are feminine, although you should not rely only on the ending in every case.

Its basic singular forms are:

• η μυρωδιά = nominative
• της μυρωδιάς = genitive
• τη(ν) μυρωδιά = accusative

So in this sentence, η μυρωδιά is feminine singular nominative because it is the subject.

προκαλεί is the 3rd person singular present active form of προκαλώ.

That means it is used for:

• he/she/it causes
• causes with a singular noun subject

Since the subject is η μυρωδιά (the smell), Greek uses προκαλεί:

• η μυρωδιά προκαλεί = the smell causes

A few present-tense forms of προκαλώ are:

• προκαλώ = I cause
• προκαλείς = you cause
• προκαλεί = he/she/it causes
• προκαλούμε = we cause
• προκαλείτε = you (plural) cause
• προκαλούν = they cause

Because Greek often leaves out the article with abstract nouns, especially when speaking in a general sense.

So:

• προκαλεί αηδία = causes disgust

This sounds natural and general, like saying that something produces a feeling of disgust.

If you added the article, την αηδία, it would usually sound more specific or context-dependent:

• προκαλεί την αηδία των ανθρώπων = it causes people's disgust

But in your sentence, the bare noun αηδία is perfectly natural.

It is in the accusative singular because it is the direct object of προκαλεί.

The tricky part is that for this noun, the nominative and accusative singular look the same:

• nominative: η αηδία
• accusative: την αηδία

So when the article is missing, you just see αηδία, and the verb tells you that it is the object here.

Because many feminine nouns in Greek have the same form in the nominative and accusative singular.

For αηδία:

• η αηδία = the disgust (subject form)
• την αηδία = the disgust (object form)

Without the article, both simply appear as αηδία.

This is very common in Greek, so learners often have to rely on:

• the article, if there is one
• the verb
• the sentence structure

A rough pronunciation is:

• Η = ee
• μυρωδιά ≈ mee-ro-thya
• προκαλεί ≈ pro-ka-LEE
• αηδία ≈ a-ee-THEE-a

So the whole sentence is approximately:

ee mee-ro-thya pro-ka-LEE a-ee-THEE-a

A few helpful notes:

• δ sounds like the th in this
• θ sounds like the th in thin
• ει in προκαλεί sounds like ee

Greek uses an accent mark to show the stressed syllable in words of more than one syllable.

So:

• μυρωδιά → stress on the last syllable
• προκαλεί → stress on the last syllable
• αηδία → stress on -δί-

But Η is only one syllable, and monosyllabic words usually do not take an accent mark.

So the lack of an accent on Η is normal.

Yes. Greek word order is more flexible than English word order because case and verb forms provide more grammatical information.

The neutral order here is:

• Η μυρωδιά προκαλεί αηδία.

But other orders are possible for emphasis or style, for example:

• Αηδία προκαλεί η μυρωδιά.

This still means essentially the same thing, but it puts more emphasis on αηδία.

For a learner, though, the given order is the most straightforward and natural to start with.

Yes, it is natural and idiomatic.

προκαλώ αηδία is a normal way to say that something causes disgust or provokes revulsion. It is somewhat formal or neutral in tone.

Depending on context, Greek could also use other expressions, such as:

• μου προκαλεί αηδία = it disgusts me / it causes me disgust
• είναι αηδιαστικό = it is disgusting

But Η μυρωδιά προκαλεί αηδία is a perfectly good, natural sentence.

μυρωδιά can be either neutral, pleasant, or unpleasant depending on context.

It can mean:

• smell in a general sense
• scent if pleasant
• odor if unpleasant

In this sentence, because it causes disgust, the meaning is clearly negative. So in English, smell or odor would fit better than scent here.