Also...now I know this is downright weird...upon opening the front door of a home, before I even set foot inside, I KNOW IF THERE'S A PVC Shower curtain in that house. It may be on the 2nd story, but I can smell it as soon as the door opens. I have a horrible reaction to PVC Shower curtains, can't breathe, skin turns red, heart beats like its about to burst out of my chest, it's really frightening. Why? I have no idea. But I listen to my body & my bloodhound nose. If it hits my sense of smell or taste buds, I'm gonna pay attention!