It’s a fruity note… inhales deeply … reminiscent of… fir with notes of cinnamon.

Leaded solder is sooo much easier to work with. Wash your hands well after each soldering session, have a fan gently blowing over your work bench & a window cracked open & you should be (relatively) fine**. Unless you’re doing it very regularly for long periods in which case a proper extractor is worth the investment. Occasional hobby tinkering for 15-30 mins at a time over an iron is unlikely to be bad for you if you follow basic steps. **Not medical advice!

P.S. Awesome work. I can remember the first time I modded Wii 1st gen, as my first non practice soldering, I was so nervous. But the mod still works to this day, many many years later. More people should learn to solider, it’s not overly hard if you have a decent enough soldering iron, a steady enough hand, & are willing to practice. It’s so satisfying when it works!!