How does nicotine gum compare to vaping? I've never smoked but started to vape for a nootropic/to help my ADHD. It helps a bit but I haven't done it much yet, just a few puffs every few hours.

I've considered switching to the gum because it's more subtle and can be done in public. But how is its effectiveness and safety compared to vaping? I've looked it up but most people compare it to smoking so that won't help me.