The running joke about if someone checks your browser history and act worried just tell them that you’re a writer. It’s okay. You were researching a story.
For me, this was foremost in mind when I was researching a romantic suspense book and I needed to know who investigated plane crashes and the nearest FBI office to a certain area. I used Google Maps to look at terrain, to check jurisdiction, and to see the process for investigating plane crashes and plane sabotage. Obviously, it was for a book, but it sure made me wonder about “big brother”.
For my fantasy I do a lot of Latin translations on Google Translate and my browser history is bit more tame. Sure, I’ve downloaded open source ethics textbooks because I would love to create a book on the ethics of magic for my world, but while that is a bit of esoteric research, it’s also just the sort of thing writers would do.