No. OCD is not a communicable disease; it is a disorder, which means it develops based on how an individual’s brain processes the information from his or her environment and that individual’s resulting actions.
Someone without OCD may touch a garbage can and think nothing of it, whereas someone with OCD may touch it and fear being contaminated to the point of obsession. OCD is not caught from someone else, but develops based on a person’s own thoughts, feelings, behaviors, and brain chemistry.
Some research indicates that OCD may be related, in a very small number of cases, to strep throat infections, which you can catch from someone else, but there would be no way in that situation to say that someone caused OCD in another person. It would be the result of the infection.
And, while there are genetic links in OCD, they are not 100 percent, so we cannot say for sure that, for instance, a child “catches” OCD from her parent.