Dear Annie: When a child asks why I use an oxygen tank, I always answer truthfully

DEAR ANNIE: I am disabled and use a mobility device and oxygen due to emphysema, which was caused by my 30 years of cigarette smoking. I quit before my diagnosis, but it was too late. One of the biggest issues concerns questions or comments from others. When I hear ignorant remarks from adults, I consider the source and move on. But I’d like to add something to your information when it’s a child who wonders. I always answer the child. Most recently, I shared a table at a Japanese restaurant...