That is a little like suggesting that a sound recorder is just electronics and shouting at any electronics should elicit a response. Bringing it back to the neurons,

• loud enough sound on any neuron will probably excite it
• However the sensitivity of neurons connected in the ear to sound is thousands or millions or billions (not bothering to calculate it) higher than the sensitivity of a random neuron in the brain to sound
• A random neuron responding to sound won't feel like sound. If a pain neuron is activated by sound, it will appear as pain, if a hot neuron activated by sound will appear as heat, etc.

So as hot as the air has to be to excite your cochlear apparatus, and thus the neurons connected to it, it probably has to be thousands or millions times hotter to excite the neurons directly in your brain. And long before it gets to that temperature your brains has been cooked, then dessicated, then burned, and finally decomposed into a plasma of atoms and electrons flying about separately, and probably at the temperatures we are talking about, the protons and neutrons are smashed apart into a cloud of subatomic particles.