narcotize

To use a narcotic in order to make (someone) drowsy or insensible; to anesthetize, to drug.

To dull the senses of (a person, place etc.).

To make into a narcotic.

The sun hangs overhead like a lantern, the essence of new grass and apple blossom narcotizes the air, the clack and whir of the wheels have a quelling, hypnotic effect on the passengers.