SENSE & SENSITIVITY DEAR HARRIETTE: It’s allergy season again, at least for me. I find myself sneezing and sniffling all the time, even though I use allergy medicine. Sometimes I can tell that my co-workers back up a little when I have allergic reactions. I feel confident that I am not contagious. It’s just allergies, but they do present like a cold sometimes. How can I reassure my co-workers that…