to 
A few things a 'scientific expert' should avoid: - state they're an expert - push conspiracy theories - monetise their views - claim to 'follow the science' - view everything through the lenses of politics - never express doubt - be predictable, always - lack self-depreciation
-being seen without a coffee mug by their side. -appearing prepared. (You should always aim to be caught slightly off guard). -failing to mention “how much work they have or “how stressed they are” in the last 10minutes.