For sure .... depends on what sort of engines are up the front/side. I know that the C206 that i have been flying, if you dont lean the mixture whilst on Taxi, there is a good chance that you could have fouled plugs.
I will always lean the mixture, even if only slightly at an aerodrome where there is quite a bit of taxiing involved. It can get kinda annoying that you may have to clean the plugs each time prior to T/O
Hope this helps ....
