Bad Feelings at a Local Cemetery?

There's a cemetery close to my house that has a wonderful duck/goose pond in it. I used to take my kids there when they were younger to feed all the birds. I was thinking about that today and I remembered something.. After we'd feed the birds, we'd drive around the cemetery looking for deer and black squirrels that were always running around. Whenever we drove past a certain mausoleum however, I'd either get sick to my stomach or get a stabbing headache. As soon as we ped the building my head or stomach would feel normal again. This happened many many times. What could this mean? No mean or stupid answers please.