Hi, can anyone help, I have several plants in my front porch and I have noticed a funny smell, like cat's urine. The plants I have are, a yucca, an easter cactus, devil's ivy. a draecena marginata , an australian bottle tree, 2 chilli plants, a christmas cactus and a ficus benjamina. The smell is very strong and I don't have any cats so am assuming it must be coming from 1 of the plants. I have tries sniffing them individually but I can't seem to smell anything. Would appreciate any help!