Original Commentary
I don't really know what a cactus smells like. The last panel, originally, read "[Richard and Sinclair]", which is sufficient to summarize it. This time I was able to revise that before Isabel had to draw it. I was listening to "Le Cactus" by Jacques DuTronc at the time - Terrence

Modern Commentary
We've got a few medium-sized cactuses now. I'm not getting close enough to smell them.

Cactus candy is generally citrus-flavored but perhaps less sweet. - Terrence