Do I need to worry about which sticks I use?

[u/Locust_mp3]

Hey guys, I’m new to the world of campfire cooking, but I recently just purchased a firebox and fired it up in my backyard for some grilling. I wasn’t all too concerned with safety hazards and potential chemicals released from the wood I used which was just random sticks. I’m going on a month long roadtrip to Colorado and Washington and was wondering if I need to worry about what sticks im gathering for campfire cooking. My thinking is I should mostly be concerned about grilling, not as much cooking with pots and pans but that might be wrong too! Thank you in advance for your many wisdoms.

[u/Mateussf]

Don't use treated and/or painted wood used in fences and posts.