gamelot and Les, I just saw your posts containing fotos of mouse nests and that is exactly what i found while replacing cabin air filter, so i will see if i can come up with any info regarding sealing off the air intake under the hood without disrupting any hvac systems . I suspect this is an old nest as there is no stink or any traces of mice !Removed! etc. but will keep my eyes out for any new signs of the little bstrds!!