It seems to be common among a lot of sci-fi shows. It features an attractive lady with pheromones (or some other voodoo) that makes male protagonist that are usually level headed fall prey to their libido. Willing to do what ever said lady wants no matter how nefarious.
So far I got:
STNG; (although the lady in this one wasn’t evil)
Angel had Jasmine in Season 4. The twist with her - it? - was that anyone who saw her or heard her voice, even over the television or radio, immediately started worshipping her as a god, with no ability to resist.
The silver Space Lady thought Dr. Smith was ‘sooo prettty’ on ‘Lost in Space’. (I think she was silver…she might have been green?). I remember seeing it originally when I was 11 or 12, and even then, I thought ‘she’s barking up the wrong tree!’, lol.
She was silver on my TV set, but then, our TV was black and white in those years. I’m told that the later seasons of Lost in Space was in wild, vivid, late-60’s colors, the sort that makes you suspect someone was using recreational pharmaceuticals at least some of the time, but it was lost on me.
(It wasn’t just the colors that made me think several late-60’s TV shows involved drugs, lots of drugs. For example, the entire plot of “The Great Vegetable Rebellion” episode from Lost in Space - don’t get me started on H.R. Puffenstuff…)