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The scientists say brake
could be the cause of a
they have dubbed "London
". Sufferers are the city dwellers who
experience
noses and irritating coughs and colds. These could be caused by people inhaling the brake dust. Metal particles coat the
and prevent cells in our immune system from clearing harmful bacteria. Researcher Dr Ian Mudway said dust from the various sources of
within vehicles casts doubt on motor industry
of zero-emission cars. He said: "There is no such thing as a zero-emission vehicle. As
to reduce exhaust emissions kick in, the contribution from [sources such as brake dust] are likely to become more
."
