We are all gandhabbas with physical bodies.
– So, we can taste food, smell odors, and touch things (sexual activities included).
A gandhabba without a physical body (while waiting to get into a womb) is human too.
– It just does not have a physical body that can do the above three things. Thus it does not generate kaya sankhara.
– But all cravings and attachments are there.
– It can still cultivate vaci sankhara and drastically change its personality (gati).
– Vaci sankhara generation does not require “speaking”, i.e., it does not require a physical body. That gandhabba can talk to itself and still generate vaci sankhara. See the post, “Correct Meaning of Vacī Sankhāra“