A device that allows people to monitor the damage passive smoking is doing to them could add fuel to the debate over whether smoking should be banned in public places.
A fumatorium has been set up in the lab to simulate smoking
Dublin-based researchers at the Media Lab Europe are developing a wearable gadget that takes readings of the amount of carbon monoxide and other particles given off by cigarette smoke.
It will allow people, especially those that work in smoky environments, to see how much damage passive smoking is doing them.
"Once a bartender knows how much he is inhaling, it might change his opinion on a ban," Jamie Rasmussen, a researcher at Media Lab Europe told the BBC's Go Digital programme.
At the moment, the researchers are using a handheld computer that can provide readings of the level of noxious substances being inhaled.
The gadget could prove controversial in smoke-filled rooms
But they are looking at using different techniques to tell people in detail how much damage is being done to their lungs.
People could also find out how the amount of smoke is affecting their skin and even what their life expectancy is after a week's or month's worth of passive smoking.
The device is particularly timely because the Irish Government is considering banning cigarette smoking from pubs and restaurants.
Other countries are also looking at tobacco bans and the group has presented its device to the World Health Organisation.