In Paris the air is crasseux

From the Washington Post:

In an effort to curb pollution that some days makes the city as smoggy as Beijing, Paris began on Friday to ban cars built before 1997 from coming within city limits. Vehicles registered before then — and motorcycles before 1999 — will now face modest, phased-in fines during weekday traffic between 8 a.m. and 8 p.m., though they can drive freely into the city on weekends.

In Paris the air is crasseux.

Parisians, they mutter "Par bleu!"

So elderly cars

the city now bars,

making Renault to go fou.