Hi Lal,
“Some gandhabbas can become more dense by inhaling aroma. Then they can be seen by those with supernormal powers, or even by some normal humans (there are very few with such capabilities). So, those “ghost like” figures shown in cartoons depict such “dense gandhabbas”.”
I strongly believe in this. Many years ago, one of my family members had some problem with her health. Doctors could not do much about the situation. So, through someone’s recommendation, we brought this person to see a guru. This guru could see the gandhabba of a young girl without any clothes on. He said that the little girl is causing health problems to our family member because she was aborted by her, and that she needs to do merits and transfer to her for the issue to be resolved. We were shocked! This guru knew the cause of the problem and the details without us telling him! So, how did the aborted foetus grew to a full sized adult if not for taking in ahara? How did the guru know about these undisclosed family secrets if he does not have supernatural abilities? These things helped me boost a lot of confidence in Buddha Dhamma. True enough, after merits were done and transferred, my family member’s health recovered tremendously.