i don't know. i'm not in it right now. don't have any fresheners or crap like that in there. not leftover food wrappers either. i don't roll that way. my guess (cause i'm not going out there this instant to check) is that it smells like a combination of dirt, dog, and maybe coffee...cause I think my travel mug is in there.
have you ever converted a large area of your lawn to garden? if so, did you neighbours comment on it positively or negatively?