I've tried different propane types, from torch cannisters to camping cannisters, and the least smelly IMO is Coleman. I have to agree that of the ones I've tried, it's easily the most bearable, and the smell dissipates the fastest.
I bought this one cannister at a small mom & pop store downtown a couple of months ago. It stunk like nobody's business. I fired a couple of mags in my basement, and had to stop and open a window. I went out for the afternoon, and on my return, I could still smell it, but everywhere in the house rather than just the basement.