Warning light keeps coming on HELP please!

Lately a warning light has kept coming on randomly whislt iv been driving it normally hasn't been a problem until recently it has came on quite a lot and it maybe a pyschological thing but it seems a little down on power! Iv checked in the manual to see what the warning light means and it is 'toxic fume filter system' is that just a fancy phrase for the exhaust? Is there anything to worry about? It dosnt stay on just flashes and I slow down and it goes of!

Any help would be much appreciated guys! Thanks in advance
 
I'm going to see Renault tomorrow so I'll let you know what they say. Is yours staying on? Or just flashes a few times then goes off?
 
wasn't missing or not running well, just the light flashing, read its mind with my launch x431 and then renewed that coil. after that all ok.