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I may have to stop subscribing to the ´óÏó´«Ã½'s Director of Global News, . On his blog he reveals he's one of many people curious about their own health after taking a plane that had been contaminated with polonium-210:

Sitting in economy and having a cup of tea seems unlikely to mean i would have ingested any polonium-210 (although the tea is never great on planes). But what is that difference between "very low risk" and none? I am not concerned, but certainly curious. (via Cybersoc)

One wonders how you would calculate a risk in such unique circumstances? Perhaps a statistician can leave the answer in comments. The question Richard asks in his blog posts about the sale of polonium (you can buy it for $69) was partially answered in this excellent piece in
UPDATE: Sorry for posting this twice if you subscribe to the blog. I've had some serious formatting issues.