Disinfectant kills germs but you want to remove grease, cigarette smoke, and the dirt that sticks.

Paint will not adhere to any surface if it has contaminants like cigarette tar, vaping residue, grease from cooking, etc.

Say, "I was walking past your door and I saw and smelled a cloud of cigarette smoke coming from your unit.

Hospitals- charging different amounts (insurance, private pay, Medicare, ect.)Coke/alcohol/cigarettes - selling a product that is addictive and pretty uselessCar lots- running someone’s credit 10 times to get them to qualify.

Beer and cigarettes seem to be a common theme.

Just for discussion purposes.I picked this pic off the internet.It looks like a lot of "Hoarder Houses" decor style.Busy carpet, busy furniture, paneling, faux rocks on the walls, flat paint.I can smell the cigarette smoke just looking at the picture.But I wonder if you owned this place, as either a flip or a rental, or AirBnB, would you rip everything out and paint it all grey and modern.Or do you think pic 2 is acceptable and cheap (quick) way to do it.Tear it out to the studs, or just light cosmetic changes, or something completely different?

New kitchen, bathroom, flooring throughout, as well as cigarette smoke mitigation. 

, doors off hinges, broken windows--unreported and just left broken and open to the elements, heavier wear and tear on flooring than class B, large secret dogs that they are babysitting for a relative in jail for unpaid parking tickets, cigarette smoke smells indoors, broken shelves, home-made (crap) repairs on things, dead cars on the property, dead cars up on blocks on the property, piles of old bald tires, etc...Not all, but some. 

The house smelled absolutely horrible, a little bit of cigarette smoke and a lot dog pee. 

I think it took seven decades to get the industry to admit that cigarettes cause any sort of health problems whatsoever.