Zsh: remove # - comment when pasting to terminal?

I use clipmenu to choose something to paste into terminal that running zsh as shell.

Problem is that zsh will echo error when for example I paste a shell function that contains some # for comments inside that function. I have to manually go back and clear all lines contain #.

System: archlinux/zsh/clipmenu

EDIT: example of function:

test() { # must remove this line manually after paste into zsh's shell <do something> }