With repeated exposure to stings, some people become hypersensitive, after which another sting could be much worse, if not fatal. People allergic to bee and wasp venoms should not wear floral-scented cosmetics or nail varnish. The solvent (amyl acetate) in nail varnish is the alarm pheromone of bees and provokes aggression. Don’t wear brightly patterned clothes. If bees are about, remain calm and move slowly.