Can anyone tell how or what is the taste of sweet, sour,... and/or what the smell of a flower like or what the pain will be like? I guess Never. One have to feel it, realize deep inside the mind, the brain. If you have no taste buds, you can't taste anything. Likewise, if one has no sensory organs, he/she never loves any one, its just a dead body. Love is not only meant for sex but also for friends, parents, relatives, plants, animals. It's just a desire. If I like sweet taste, my brain signals me to taste it. Its a need that we named as LOVE.
Every cell is alive and that groups together to a whole individual organism. Organization of atomic molecules in the cells, all essential nutrients, DNA, RNA, etc,. controlled by the brain. All cells in the body are composed of these basic atomic elements like hydrogen, carbon, etc. So every cell is alive and everyone is alive until the death of the last cell in the body. You may notice that, certain organs in the body of human (kidney, eyes) can be used for transformation and other medical operations even a person is considered to be death. So, i think the person is fully dead at the death of the last cell.. This will be crazy if you think, but for me that's a logic. 
I have a question . This is especially for genestists and biotechnists [O8)]. Is there any relation between gene and personality [:X] [:-'(]   [^] [!] [V] i.e; character [?]. Also, why there are some external morphological variations between the countries. For example, Chinese have a flat face and stub nose and Africans were gigantic and has curly hair and most of the indians have baldness. For all these people, they are similar within their countries but differ with other countries. I apologise if i made any inconvenience or hurt.
i suspect that the HIV virus in human blood, when aspirated by the mosquito gets disrupted as the virus was very host specific and also the mosquito takes some time for next feed, so, the viruses may be killed, as the virus will be alive for very few second outside the host (primates). too, mosquitoes will never inject the aspirated blood.