When someone walks up to me and opens with "quick question" the hairs on my neck stand up. I had a job where that became an office trend, everyone would start with "quick question".
I started responding to "quick question" with "long answer". That and I also hung a sign on my chair with my official office hours. Neither actually worked, and people thought I was rude, but it did make me feel better to try to push back. ;)
Long term my takeaway is that while too many meetings drain the life out of people, there's also a layer of communication that needs to happen, and when too much interrupting is going on, it's a sign that the right kind of meetings aren't taking place. Now instead of getting annoyed, I start to track the "quick question" categories, and create new channels for the commonalities, ideally Slack or email rather than a meeting, but in person when it gets big enough.