Parfümü fazla sıkma, yoksa salondaki yaşlı misafirler rahatsız olabilir.

Yes, sıkmak has several meanings in Turkish, and context decides which one is intended.

In this sentence, parfümü fazla sıkma means don’t spray too much perfume.

Common meanings of sıkmak include:

• to squeeze
• to press
• to spray
• sometimes even to bore in other contexts

So here, because the object is parfümü, the meaning is clearly to spray.

Sıkma is the negative informal imperative of sıkmak.

• sıkmak = to spray
• sık! = spray!
• sıkma! = don’t spray!

So Parfümü fazla sıkma is a direct instruction to one person: Don’t spray too much perfume.

Yes. Sıkma is the informal singular command, used for you when speaking to one person.

Other possibilities:

• sıkmayın = don’t spray (formal singular or plural)
• sıkmasın = let him/her not spray

So this sentence sounds like someone speaking casually to one person.

The -ü ending is the definite accusative suffix.

• parfüm = perfume
• parfümü = the perfume / perfume as a specific object

With many transitive verbs in Turkish, a specific or definite direct object often takes the accusative ending.

So:

• Parfüm sıkma can sound more general: Don’t spray perfume
• Parfümü sıkma points to a specific perfume or treats it as a specific object: Don’t spray the perfume / don’t spray too much perfume

In everyday speech, this can sometimes feel subtle, but grammatically that is the reason.

Here fazla means too much or excessively.

So:

• fazla sıkma = don’t spray too much

It functions like an adverb here, modifying the verb sıkma.

Here yoksa means otherwise or or else.

It connects the warning to the possible result:

• Parfümü fazla sıkma, yoksa...
• Don’t spray too much perfume, otherwise...

This is a very common Turkish structure for warnings:

• Acele et, yoksa geç kalacağız.
• Hurry up, otherwise we’ll be late.

Salondaki means the one(s) in the living room / hall / salon.

It is built like this:

• salon = living room, hall, lounge
• salonda = in the living room / in the hall
• salondaki = the one(s) that are in the living room / the in-the-living-room ones

The ending -ki turns a location phrase into something adjective-like.

So:

• salondaki yaşlı misafirler = the elderly guests in the living room / hall

Not usually in this kind of sentence.

In Turkish, salon often means:

• living room
• hall
• large room
• lounge

So salondaki yaşlı misafirler most likely means the elderly guests in the living room or in the hall, depending on context.

Turkish does not have articles like the and a/an in the same way English does.

So yaşlı misafirler simply means elderly guests or the elderly guests, depending on context.

In this sentence, because they are identified further by salondaki, the natural English translation is usually the elderly guests in the living room/hall.

Rahatsız olabilir means may be disturbed, might feel uncomfortable, or could be bothered.

It comes from:

• rahatsız = uncomfortable, disturbed, bothered
• olmak = to be / become
• olabilir = may be / might become / could be

So the whole idea is:

• the elderly guests may be disturbed / may feel uncomfortable

Olabilir is built from the verb olmak:

• ol- = be / become
• -abil- = can / may / be able to
• -ir = aorist/present-future type ending

So literally it is something like can/may become.

In actual usage, -abilir often expresses possibility, not just ability.
That is why rahatsız olabilir is best understood as:

• may be disturbed
• might get uncomfortable
• could be bothered

Because the speaker is expressing a possibility, not a certainty.

Compare:

• rahatsız olurlar = they get disturbed / they will be disturbed / they tend to be disturbed
• rahatsız olacaklar = they will be disturbed
• rahatsız olabilirler = they may be disturbed

In your sentence, the speaker is warning about a possible consequence, so olabilir fits very naturally.

Also, in colloquial Turkish, the plural ending on the verb is often omitted when the subject is already clearly plural:

• misafirler rahatsız olabilir
• misafirler rahatsız olabilirler

Both are possible, but the version without -ler on the verb is very common.

Because Turkish normally places the main verb at the end of the clause.

So:

• salondaki yaşlı misafirler = subject
• rahatsız = predicate word
• olabilir = verb
• all together: salondaki yaşlı misafirler rahatsız olabilir

This final verb position is one of the most basic word-order patterns in Turkish.

Yes. The original sentence is natural and casual, but if you want to be more polite or formal, you could say:

• Parfümü fazla sıkmayın, yoksa salondaki yaşlı misafirler rahatsız olabilir.

Here sıkmayın is the polite/formal or plural version of don’t spray.

So:

• sıkma = informal singular
• sıkmayın = polite singular or plural

Yes, it is very natural Turkish.

A few things that make it sound natural:

• fazla sıkma is a common way to warn someone not to overdo something
• yoksa is a very common warning connector meaning otherwise
• rahatsız olabilir is a standard way to express possible annoyance or discomfort
• salondaki yaşlı misafirler is a normal compact Turkish noun phrase

So overall, this sounds like an everyday, idiomatic warning someone might actually say.