I had an allergic reaction today for the first time in my life (hives on face and neck, burning skin, nose and throat felt a little tight, heart was working harder, slight headache after). I was painting with latex paint at the time, but I paint a lot at my job with the same stuff. Is it OK to go back in and paint after taking Benadryl? Or is there another medication I can take if I know I ll be painting? will a simple face mask help? or an air filtration mask? It s weird that it happened since I ve been using the stuff for years and have never had a reaction to anything ever. Thanks.