Invasive Procedures (DS9 S2 E04) was recommended by Rhaen, who said:
"I saw it as a rerun, I had to have been 7-8 years old. As a kid I identified with the Trill since I felt like my consciousness and body are separate things, like my consciousness was some other being living inside me. Anyway the episode has some rando show up and hijack the Dax symbiont for a little while, and there are these kinda weirdly intimate scenes both where the symbiont is taken out of Jadzia and put in the guy who is them briefly imbued with all sorts of memories and knowledge. The theme of the episode is that it’s wrong to take something by force rather than earning it (the trill pipeline) I think, but my very young takeaway was different, reflecting more on the intimacy of the symbiotic relationship and vulnerability I guess!"
Invasive Procedures first aired on October 17, 1993, written by story by John Whelpley, teleplay by John Whelpley and Robert Hewitt Wolfe, and directed by Les Landau