Milly for your first sonnet you nailed it though I'm not sure on meter etc etc but who cares because this is just mind-blowing. I still cannot get my head around this form.
1/ My initial thoughts were this person is definitely like a bad smell hanging around or a fly around sh.. (you get me) always there even after all this time and when you smell the BO spray or aftershave they used to wear it sets off all these emotions and jeez aren't they bad because I think this person was bad for you regardless of what you thought at the time. Just my thoughts... I like the imagery of their smell sending your blood ice cold even if it's a bad thing because it shows the hold they had possibly still have on you and I know exactly how it feels.
2/ I feel this is about control though I may be waaaàay off the mark. Very powerful.
3/ Wow wow wow !! Kindness always prevails in the end.
Couplet: This is the most powerful thing I have ever read and so very true and relatable in my opinion. The grass (despite what we think) is not always greener on the other side unless we make it so. That's my view anyway.
Sonnets are notoriously difficult. I can see you've worked hard, even using ye olde language. Like me you have found the stress placement a challenge and have errors as a result. Milly, this is an excellent first attempt; certainly a better one than I achieved. Lol