I have posted about Stapeliads, plants which trick flies into pollinating them, but orchids are another plant family which trick insects.
Some orchids give nectar or pollen as a reward for visiting their flowers but others do not. Instead, they emit scent which mimics female sexual pheromones and attracts male wasps or moths that attempt to mate with it. These mating attempts pollinate the flower instead.
Once you start looking at these flowers in a certain way, it's fairly easy to discern how the trick works: there is a part of the flower which resembles the face of the target insect and acts as a guide for the target insect. Although insects don't mate with their faces, they seem to use them as a guide to get into mating positions. Although it's unclear from reading online exactly which species of insect pollinates Phalaenopsis orchids, these common houseplants are part of the group that trick insects and despite our selective breeding of these orchids, there is a part of the flower structure that doesn't change: the insect "face".
Look at the centre of this flower: the area which is red and yellow is where the pollin (male part of the flower) is located and just above it, there is a little structure that resembles a moth or wasp face. The little point at the bottom of of the face is the female part of the flower, where the pollin goes. At some point in its maneuvering around attempting to mate, the moth or wasp will transfer the pollin onto this part. The rest of the parts of the flower also either guide or block movements or act as perching places for the insect. Because our homes are very far removed from the natural habitat of phalaenopsis orchids, native to South-East Asia, where they grow on trees, it is impossible for these plants to be pollinated growing in our homes, except by accident or deliberate pollination by people who know how to do this. Growing orchids at home is fairly impossible without special equipment, they make very small seeds so this isn't something I'm likely to try at home.
The flower below is a wild orchid species, Habenaria galpinii, that grows in the grasslands near my home and are known to be pollinated by Hawk moths. Can you see the moth face?
Further reading:
The art of deception: Why morphology matters in flowers' pulling power
Orchids and Their Pollinators