Hello,I have a finished basement with all the needed egress/outlets and I am considering it to convert it into an apartment and there are few areas (kitchen exhaust and kitchen sink) I lack understanding  and would like to better understand what is the best possible way to go about making those changes.I will greatly appreciate if someone can share their experiences on how they went about a setting up a kitchen particularly exhaust for kitchen odors and kitchen sink in a basement

For a long time in some homes I've wondered, what is that foul smell?

Most posters say to use oil based Kilz, but are you also using some sort of enzyme odor remover prior to this?

If you can fill the vacancy it might be best to operate under a “no harm no foul” policy.

My first step would be to refuse those two requests and offer to let him out of the lease "no harm, no foul", if he is not happy with the arrangement.  

@Caleb Heimsoth  as Bob noted, there are people who will paint for $175/day but availability might be a big issue and it also depends on what quality you're looking for (e g does it matter to you that the old paint bleeds thru in a couple of spots)if you figure around $1.05-$1.10/sq ft (of wall space, not just floor space) that will put you on the low end of retail, will give you a decent quality job but won't include wall repair or baseboards/trimdry locking the basement should be around the same price but that stuff has a pretty overwhelming odor so you might get contractors saying they either don't do it or want a premium....get yourself a quart and open it up if you don't know what I mean....I've got a painter and other contractor referrals.....most will work anywhere on the west side. 

I've always viewed vacant units, and those units were always freshly cleaned and painted and appliances clean or new with no lingering odors.

I don't use air fresheners because they can be offensive as easily as refreshing.A clean, neutral odor is all I want.

Be careful about entering the Liar of one of the most foul beasts in all of Real estate Matey.....

I can understand the concern because of the odor, but your question did not include smoking marijuana or taking marijuana pills for medicinal purposes.