You should make offers on properties you really intend to purchase. If you are having reservations about this condo, there is a reason. Most of us have a gut feeling about certain things. Your gut appears to be telling you this might not be the place for you to purchase.
Normal;y when you make an offer on a property, you place certain things in motion, which cause work and individuals plan based on your offer
If you make an offer and the offer is accepted as you made the offer, what would be your reason for declining it other than something that might be found during your inspection?
You have seen the condo on three separate occasions, what do you see that make you keep going back. Apparently there is someth9ing there.
Getting rid of smoke from the rooms of a condo or house is a difficult thing to do. Painting the walls simply will not eliminate the smoke smell from the walls. The walls have to be completely washed, using some sort of cleanser, normally used by a professional painter.
By adding a clause in your offer that the current owner would be required to paint the condo might get you a new paint job,however, you will still have the smoke odor.
I hope this has been of some benefit to you, good luck.
"FIGHT ON"