Okay, this may seem like a strange question, but do Bradford Pear trees smell bad when they are flowering? Hub and I were outside the other night and noticed a strange odor -- he thought it was garbage in our neighbor's yard. But I smelled it again in the parking lot at Lowe's (where they have some small pear trees), and then when I got home and was walking my yard - phew! The only thing I see in common is the Bradford Pears (we have 3 huge ones in our back yard that are all abloom).
I don't remember any smell last spring, but maybe I just wasn't paying attention.
Or maybe we're downwind of the city dump.