Good catch.
Yes, it was a little re-direction on my part. Unintentional though.
Respiratory hazard abatement at workplaces has 3 steps (see e.g. [link|http://www.jlab.org/ehs/manual/PDF/6630RespProt.pdf|this] .pdf picked at random from Google):
1) Eliminate or minimize hazards by changing the processes or changing the chemicals.
2) Improving ventilation to minimize exposure (e.g. painting booths, glove boxes)
3) Personal protective equipment like respirators.
It's required that things be done in that order. Respirators are a last resort. Thus, in your establishment, to protect your employees the thing to do first is eliminate the hazard - so the workplace should be a non-smoking environment.
For consistency, OSHA should require all workplaces to be non-smoking. However, I don't think that is going to happen soon as the restaurant and bar lobby is quite strong.
HTH. :-)
Cheers,
Scott.
