and por15 is worse than 2 pack in regard to toxic smell and i suppose toxins...i use to paint chieftan canopies when 2k first came in and cob paints were all the craze in 2k..this was 23 years ago and i only used a normal mask...but back then the drugs i put in my body were worst than the paint fumes..sometimes im amazed im still here...back then i found holding my breath worked well....