It's actually really close if I got the smallpox vaccine or not.
I would need to know when it ended in 1972. If it ended in early '72, I didn't get it. If it ended in the middle or later part of the year, then I probably did get it. Babies typically get these vaccines about 2 months after birth.
Out of curiosity I just asked my mom by text, but there's a good chance she doesn't remember, since it's been 50 years.