OMG Ckcowl--I thought I was the only one with 40 year old items (other than DH). I just replaced my ironing board cover and iron after 40 years (they were weddding gifts!). I hate the new iron and I'm not real happy with the cover. (Still happy with DH).
My water bottle is always used-I also never put water in my iron. I've never had a musty smell but if I did, I'd toss it and go to the dollar store for another.