I couldn't not use a mask at all...  It's a very strong smell. 

I never used to wear anything while laminating, until I discovered that styrene is cochleotoxic, meaning it causes hearing damage. 

For laminating I usually use nothing.!!?

Sorry forgot to mention that . 95% of the time it's polyester resin

Depends what you are doing. For most things, a standard respirator with organic vapour cartridges is perfect. Isocyanates arw what cause issues and need special consideration, so if you are spraying 2k polyurethanes then there simply is no cartridge respirator that is sufficient. These require an air-fed mask. 

Hi,  just question about what respiratory masks do you use? I use a moldex mask with a2 filters.