hmm well it is true that paint (even after its been left on walls for a long time) can release harmfull fumes, id suggest (if money is tight) to cover most of walls with foil paper or Mi-Lar (its like metalic paper)
COMPLETE BALDERDASH!!
you are totaly giving this guy the wrong advice!! Don't use white paint and use tinfoil ha ha!
Seriously if you don't know what you are talking about, don't try advise people.
Have you even got a grow on the go, or under your belt? or just one of those people who have grown lots of grows in theory??
Ok back to the paint... there is nothing wrong with using flat white emulsion paint at all, fumes??? don't use tinfoil what ever you do as this will cause hotspots and burn your plants. I have my room all painted flat white, and look how my first & second grow are going.
Also im a painter & decorator by trade, so i know what im talking about with the paint