I have had a strange smell of concentrated rotdeath follow me before through various places . Ended up being an infected sore way up in my nasal cavity . There was no pain or redness and blowing my nose didn ' t alleviate it . I went nuts looking for that smell around the house , as well ! Try flushing your nose with warm salt water in a netti pot or bulb syringe and see if it doesnt effect it . When you said throwing your head back made it go away it sorta of clinched it . This could be your issue ! Edit i see this was a while back , keep the idea handy for the future then . <| sep |> Yup . That ' s what it was meant to be like . Lin even said Countdown influenced it and was the perfect song . <| sep |> Also they are easier due to 1 shot kills