Should I go to emergency? I inhaled a whiff of gaseous o-nitrobenzoic acid?

Yesterday I inhaled a large amount, that immediately went up my nostrils, sharp blockage of hot pressure and something stinging, my mind went blank and my throat went dry. It was horrible... It happened twice. I had to leave the room because of my I felt disoriented... told nobody. I read what it said online about inhaling gaseous o-nitrobenzoic acid and am really scared. What should I do?