
Leonard, what if you have
an ALLERGIC reaction...
The Big Bang Theory Season 8, Episode 9

I'm ALLERGIC.
The Big Bang Theory Season 5, Episode 23

...he's ALLERGIC to Earth nuts,
but I'm the alien.
The Big Bang Theory Season 8, Episode 21

My friend
is having ALLERGIC reaction to peanuts.
The Big Bang Theory Season 1, Episode 16

- ...to the surgeon's latex gloves?
- I'm not ALLERGIC to latex.
The Big Bang Theory Season 8, Episode 9