type 4 tinware non-return flap covers

[T1 Terry]

I'll probably upset the purists, but I sealed the flaps shut against the fan housing using silicon sealant. I don't use the heater because the smell gets a bit over the top after a while and it was never particularly warm anyway.

I tried using the electric fan to push warm air through to keep the window demisted, I tried carbon filters, those filter cartridges out of dust masks and a few other attempts at stopping the smell, in frustration I removed the heater baffle hoses that run from the exhaust heater assembly to the tubes that run under the floor .... and the smell stopped 

T1 Terry