My van smelled the same but it was just that heavy felt pad underneath the carpet corrupting. For the person who asked, not every WalMart has Odoban, but Sams Club always has it, the smell is like Eucalyptus, like a dentists office. It is a disinfectant, primarily and will kill most any kind of bacteria and virus without risk of bleaching. Lysol tells you on the package that to kill the most virulent strains it has to be wetted with lysol for a certain period of time, not just sprayed over. So you can try whatever you can get, but check to see if your condensate tube is draining first or if it is draining back into the floorboard. If not, you will not fix the problem for long.