This is a bit random but has anyone had an absolute mother of a headache from bitumen paints? I've been doing some flat roof repair outdoors, applied primer first which gave me a headache so I purchased an organic gas half respirator for the next part - assumed it was pretty effective, couldn't smell a thing - using the blackjack felt adhesive and bitumen paint and tonight I'm on the floor, headache, nausea - is this an extreme reaction or is this really nasty stuff?