Air pollution is linked with around 40,000 early deaths a year in the UK doctors have warned.
They also put the resulting cost of air pollution in the UK at £20 billion annually and £187 billion throughout Europe as a whole.
Research by the Royal Colleges of Physicians and of Paediatrics and Child Health said that diesel emissions have been poorly controlled, indoor air pollution has been overlooked.
And tobacco still poses the biggest indoor threat, but wood-burning stoves, cleaning products and air fresheners can contribute.
The report also pointed out that mould and mildew in poorly ventilated rooms can also cause illness although indoor pollution is not as big a problem as outdoor pollution, but experts say it has been overlooked and needs studying.
Heating and cooking appliances can release particulates and nitrogen oxides that can damage the lungs and heart.
Mould and mildew in damp and poorly ventilated homes can cause respiratory problems.
The report estimates that indoor pollution cause or contribute to the deaths of 99,000 people every year in Europe.
At present, not much is known about what health effects occur from the levels of organics typically found in homes, however, the lemon-and-pine scents that we use to make our homes smell fresh can react chemically to generate air pollutants, and ozone-based air fresheners can cause indoor air pollution that can affect our health.