Wrestling Terp I'll repost this information for you on the study about second hand smoke done at the request of the government.
In 1999, comments were solicited by the government from an independent Public and Health Policy Research group, Littlewood & Fennel of Austin, Tx, on the subject of secondhand smoke.
Using EPA figures on the emissions per cigarette of everything measurable in secondhand smoke, they compared them to OSHA's PELs.
The following excerpt and chart are directly from their report and their Washington testimony:
CALCULATING THE NON-EXISTENT RISKS OF ETS
"We have taken the substances for which measurements have actually been obtained--very few, of course, because it's difficult to even find these chemicals in diffuse and diluted ETS.
"We posit a sealed, unventilated enclosure that is 20 feet square with a 9 foot ceiling clearance.
"Taking the figures for ETS yields per cigarette directly from the EPA, we calculated the number of cigarettes that would be required to reach the lowest published "danger" threshold for each of these substances. The results are actually quite amusing. In fact, it is difficult to imagine a situation where these threshold limits could be realized.
"Our chart (Table 1) illustrates each of these substances, but let me report some notable examples.
"For Benzo[a]pyrene, 222,000 cigarettes would be required to reach the lowest published "danger" threshold.
"For Acetone, 118,000 cigarettes would be required.
"Toluene would require 50,000 packs of simultaneously smoldering cigarettes.
"At the lower end of the scale-- in the case of Acetaldehyde or Hydrazine, more than 14,000 smokers would need to light up simultaneously in our little room to reach the threshold at which they might begin to pose a danger.
"For Hydroquinone, "only" 1250 cigarettes are required. Perhaps we could post a notice limiting this 20-foot square room to 300 rather tightly-packed people smoking no more than 62 packs per hour?
"Of course the moment we introduce real world factors to the room -- a door, an open window or two, or a healthy level of mechanical air exchange (remember, the room we've been talking about is sealed) achieving these levels becomes even more implausible.
"It becomes increasingly clear to us that ETS is a political, rather than scientific, scapegoat."