If you mean how long does it stink after it drys… if Latex… 2-3 days, oil… 3-4 days… it all depends on the ventilation
There is a 30 day cure period for all paints. During this time gasses will be produced in small amounts and released into the air. After this time some paints can still produce off-gassing, it really depends on the paint. Most off-gassing should be over after the solvent has evaporated.