Not on Sunday tinnitus..and not for religious reasons.It is not a theory but if anyone cares to take a look at how much Co2 is produced by jets under full thrust both landing and taking off they will be very surprised.Mind you there is a S/L of other nasties as well as Co2.
Then go and get a vantage point where you can spend all day observing take off and landing and start thinking about what you are seeing during the time of a one day cycle.