Car, mechanics and jazz

I took my car to the garage for some repairs.  My regular mechanic was there plus a group of people I do not know.  While the car was on the lift there was music playing on my CD player.  It was cool jazz.  The mechanic cam out from under the car and said he couldn't work on the car while that music was playing.  He then walked away.  I took the CD off the player and looked at it.  It was orange in color.  I noticed a bad smell.  I asked the people where the smell was coming from and they told me it was coming from my car.  I think it was coming from the gas tank.  I asked the people if the mechanic would fix it and they said he would not work on my car.  They told me the catalytic converter needed repairs.  I told them it was under warranty.  I drove away wondering who I would get to work on my gas tank now since the mechanic did not like my music.