Let us spray. 1  When you're at the perfume counter, buying something smelly for your nearest and dearest this Christmas, just don't ask what's in it. 2  When you're at the perfume counter, buying something smelly for your nearest and dearest this Christmas, just don't ask what's in it. Hannah Betts argues you may get a nasty surprise.
Best Answer: When a catalytic converter goes bad it will restrict the flow of exhaust gases through the exhaust system. Basically, if the exhaust won't come out easily, air won't be taken into the engine easily to mix with the fuel to be burnt and give you power.
Here are five signs that something may be wrong with your catalytic converter: 1  Your vehicleâs fuel efficiency suddenly drops. 2  Your vehicle doesnât accelerate when you step on the gas pedal. 3  Your vehicle may refuse to start.  Your vehicle fails an emissions 1  test. The MIL or Check Engine light comes  on.