[Think free or die]

"Scientists say that ingredient may damage nerves in the nose needed for smell. I'm not a scientist, but I can verify it happened to me. "

I've had the same experience. I stopped using Zicam a couple of years ago when I realized that my sense of smell had become impaired. Fortunately I haven't lost it completely. I can't prove the connection, but when I realized that I was missing out on smells I previously would have experienced, I gave up using Zicam. It just wasn't worth the risk.

[oh8eleven]

I stopped using Zicam a couple of years ago when I realized that my sense of smell had become impaired.
I very rarely get a cold and only used Zicam once or twice. I noticed the loss of smell (and taste) right after that. Fortunatley, they have recovered somewhat.
Most notable is the scent of a woman's perfume now seems to smell medicinal or "metallic."