[CApainter]

Anyone has some experience on this?

Pigmented shellac is not designed for thick film build. You likely put it on too thick, not allowing for proper evaporation of solvents. Particular important when applying two coats of it.

 

[CApainter]

Like Ridearise said, ventilate. I've never had this problem as I find the smell dissipates relatively quickly being that BIN is DA based. Now Coverstain seriously lingers. For days.

I've never had odor problems with BIN PS once it dries. Some painters think that more BIN is better than less. Not true. Shellac is not very flexible, so the thicker it is, the more brittle it becomes. BIN is merely a thin build Bonding coat. The OP should take a peek at the BIN TDS.

 

[CApainter]

I've never had the issue the OP is describing. But then I never, even in the worst of smoke saturated houses, felt the need, or urge, to apply more than one coat of BIN.

Its so easy to over build BIN with an airless, because it can look sort of transparent even though it may be already at 3-4 mils WFT.

 

[CApainter]

is that right? ive shellaced everything i could see and still tell there was cig smoke smell.

It was probably coming from the carpets and the lazy boy.