I went last week. Inhale deeply when you walk into one of the three rooms. Each smells different. Beware, though, the docents are really not knowledgeable about orchids. Some orchids are tagged and some are not. Kinda made me think NOID because the docents couldn't help. However, while it is a small exhibit, it is nice. I think they are switching out the orchids with those in the National Botanical garden orchid collection. It's definitely worth the time if you are in DC.