Move to a more urban and less earthy city.. Just kidding!! DC its legal and smells everywhere. Not that I really care or bothered. It's in apartment hallways, street corners and even driving a car you will catch fumes.
Ive watched people roll up blunts on the metro and have it in mouth ready for exit. Also saw some police jokingly say how strong it smells walking up the street.
That sucks if that's the case. I don't know the laws in DC, but shouldn't it be treated the same as having an open bottle of alcohol? In Seattle it's illegal to use marijuana in public view, how that's defined, or how it's enforced I'm not entirely sure, but I haven't personally experienced a problem here. I guess I can't speak for everyone though.