"BruceM" wrote in message
...
Now that I am thinking about it, I see several ways I could have gotten
chemicals on it. Just sprinkling Comet in the sink sends a fine cloud of
chemical dust in the air.

Use the liquid sink cleaners. The dust from some cleaners is TOXIC and
contains carcinogens. I no longer use comet in my sinks. I use liquid
"Soft Scrub" gel.