wayne... i think the initial ban on smoking on domestic flights was 1990... so you're telling us you're about 15 yrs old ? and yeah the air was filtered like this: the smokers blew their smoke into the nonsmoking section. the nonsmokers inhaled the smoke and coughed or sneezed it out along with some phlegm. after everyone on the plane inhaled the smoke-air-plegm (SAP) mixture, the air was then filtered as follows:OnePyroTec said:Being I was still crappin' green during the smoking flight days Didn't they have to filter the smoke out of the air then? Making it fresh air you were breathing?