Allergies

First off, let me say that my main irritant is springtime plants - whatever they may be - that cause allergies. It has been probably two months now with constant problems and little relief. I've tried various medications and various combinations of those medications and only end up with a life that is usually tolerable but not so great. Second, let me say that I realize that in the grand scheme of things, allergies, however severe, pale in comparison to other problems and even other physical ailments. However, that being said, allow me to to continue with my complaining in my otherwise fairly good bubble.
My biggest pet peeve (what does that mean anyway?) as of late is the question, "Is that allergies or a cold?" This question comes along anytime I sniff, sneeze, or blow my nose in public. A worse question, that I also occasionally hear, is, "Is that a cold or a sinus?" A sinus?! It's ALL "a sinus"! That's as bad as calling someone "mental." I assume they mean a sinus infection. Although that's giving them the benefit of the doubt. Moving on... Why do they need to know? Are they just making conversation? Or are they concerned that I'm infecting everyone in my path with a cold? I hardly think it should matter to them unless they have some kind of immunodeficiency problem. And another thing: isn't this allergy season? Why should someone blowing her nose be a cause for alarm... or even comment? Can't I just be miserable in peace?