You want to get rid of Quirks, break Habits and work on Flaws
A quirk has a but origin- it doesn't evolve from flaws. You can be born quirky (the charm will wear on you eventually) and even "good" habits can become intolerable- ie a guy who must shower everytime after he has s#x-immedietly can soon grow intolerable
ugggh- can't we have it all?
The spelling. Duh!
A quirk is just a minor habit, like being spooked by loud noises or laughing uproarishly. A habit is something you do regularly, like smoking, being late for appointments and texting. A flaw is a character defect, like egotism, greed, habitually lying.
Not cooking is a personal choice, as is working nights, aloofness and the inability to make small talk are quirks, and lack of emotional expression is a flaw
None they are all annoying
How easily annoyed one is.