I don’t think he would risk it. What if he failed to gas himself properly? The inevitable and massive American response to the actual use of of those devious WMDs would put “shock and awe”-campaigns to shame. It would be just like Halabja in 1988.
How stupid can you be for thinking they are just looking for him with just one look. Don’t you know they have computer images of him with all the different looks he can take on?