Dear Bob, there is a musty smell coming from either my tap or the drain in my kitchen double sink. This is strange and smelly. The bas of my tap had been loose, the plummer fixed it but still the smell remains. I am sure it is not coming from cupboard underneath. Plummer said it was coming from my drain. I poured bleach down to no avail. I'd like a natural solution if possible. Thank you very much, I sure hope it aint a poltergeist! Lisa