Μην βάζεις πολύ χλωρίνη στο μπάνιο, γιατί η μυρωδιά γίνεται πολύ δυνατή.

Yes. Μην βάζεις is a negative command meaning don’t put / don’t use.

In Modern Greek, negative commands are usually formed with:

• μη(ν)
  • the subjunctive-like form

So:

• βάζεις = you put / you are putting
• μην βάζεις = don’t put / don’t be putting

Here it is addressed to one person informally.

If you were speaking to more than one person, or using the polite plural, it would be:

• Μην βάζετε πολύ χλωρίνη...

That is a very common question. Greek often distinguishes between:

• imperfective command: ongoing, repeated, habitual action
• perfective command: one complete action

Here:

• Μην βάζεις = Don’t put/use bleach like that; don’t keep putting; don’t use too much in general
• Μη βάλεις = Don’t put (for one specific occasion)

So Μην βάζεις πολύ χλωρίνη sounds like a general warning or habit-related instruction, which fits this sentence well.

Πολύ changes its meaning slightly depending on what follows it.

In this sentence you see it twice:

1. πολύ χλωρίνη = a lot of bleach / too much bleach
   Here πολύ goes with a noun, so it means much/a lot of.

2. πολύ δυνατή = very strong
   Here πολύ goes with an adjective, so it means very.

So the same word can mean:

• much / a lot before a noun
• very before an adjective or adverb

Because χλωρίνη here is being used as a mass noun, like bleach in English.

Greek often omits the article with materials or substances when speaking generally or about quantity:

• πολύ χλωρίνη = a lot of bleach
• λίγο νερό = a little water
• πολύ ζάχαρη = a lot of sugar

You could say τη χλωρίνη in another context if you meant a specific bleach that has already been mentioned, but here it is just bleach in general.

στο μπάνιο means in the bathroom here.

It is a contraction of:

• σε = in / to / at
• το = the

So:

• σε το → στο

This is very common in Greek:

• στο σπίτι = in/at home
• στο τραπέζι = on the table / at the table
• στο μπάνιο = in the bathroom

Depending on context, μπάνιο can mean:

• bathroom
• bath
• swimming/bathing

But here it clearly means bathroom.

Η μυρωδιά is in the nominative case because it is the subject of the verb γίνεται.

The structure is:

• η μυρωδιά = the smell
• γίνεται = becomes
• πολύ δυνατή = very strong

So literally:

• the smell becomes very strong

The article η shows that μυρωδιά is:

• feminine
• singular
• nominative

Because γίνεται means becomes, not just is.

The verb is γίνομαι = to become / to happen / to be made / to turn into, depending on context.

So:

• η μυρωδιά γίνεται πολύ δυνατή = the smell becomes very strong

This suggests a change: the smell starts normal and then gets stronger.

If you used a form of είμαι instead, the meaning would be more like the smell is very strong, which is a bit different.

Because δυνατή has to agree with μυρωδιά, which is a feminine singular noun.

Greek adjectives agree with the noun they describe in:

• gender
• number
• case

So:

• δυνατός = masculine singular
• δυνατή = feminine singular
• δυνατό = neuter singular

Since μυρωδιά is feminine, Greek uses:

• η μυρωδιά γίνεται πολύ δυνατή

Yes. Δυνατός / δυνατή / δυνατό literally means strong, and Greek commonly uses it for smells, sounds, light, and similar things.

So:

• δυνατή μυρωδιά = strong smell
• δυνατή μουσική = loud music
• δυνατό φως = strong/bright light

So this is perfectly natural Greek.

Γιατί here means because.

It introduces the reason for the warning:

• Μην βάζεις πολύ χλωρίνη στο μπάνιο, γιατί η μυρωδιά γίνεται πολύ δυνατή.
• Don’t use too much bleach in the bathroom, because the smell becomes very strong.

A useful thing to remember is that γιατί can also mean why in questions:

• Γιατί άργησες; = Why were you late?

So context tells you whether it means because or why.

Literally, βάζω means put. But in many everyday contexts it can also mean something closer to:

• use
• apply
• add
• pour in

So in this sentence, Μην βάζεις πολύ χλωρίνη is naturally understood as:

• Don’t put too much bleach
• or more idiomatically in English, Don’t use too much bleach

Greek uses βάζω very broadly, much more than English uses put.

You would change βάζεις to βάζετε:

• Μην βάζετε πολύ χλωρίνη στο μπάνιο, γιατί η μυρωδιά γίνεται πολύ δυνατή.

This can mean:

• speaking to more than one person
• speaking politely to one person

So:

• Μην βάζεις = informal singular
• Μην βάζετε = plural or polite singular

A very literal breakdown is:

• Μην = don’t
• βάζεις = you put / you are putting
• πολύ = much / a lot of
• χλωρίνη = bleach
• στο μπάνιο = in the bathroom
• γιατί = because
• η μυρωδιά = the smell
• γίνεται = becomes
• πολύ δυνατή = very strong

So the literal sense is:

• Don’t put a lot of bleach in the bathroom, because the smell becomes very strong.

A more natural English translation would usually be:

• Don’t use too much bleach in the bathroom, because the smell gets very strong.