CO in the intake air cannot be stopped by any filter.

There was no regard for where the intake air came from, or where exhaust was going.

For normal operations the intake air is filtered before it enters the induction system.

This is implemented by introducing gas with the intake air and using a small amount of diesel fuel for ignition.

When the pressure of the engine's intake air is increased, its temperature will also increase.

An alternative to intercooling is injecting water into the intake air to reduce the temperature.

Its job is to make the intake air still.

Ionizing the intake air will do no good at all.

The exhaust gas exits at high speed sucking further intake air into the cell behind it repeating the process.