Assalamoalaikum wa rehmatullahi wa barakatuhu
The question as regards to Jinn having blood or not is one in which there might me many different views. The question is not from the necessities of religion hence, a daleel-e-zanni can be used in this case as this is not the usul of `aqidah.
I asked a few learned persons who replied in the negative saying that blood in this context means `killing` and so on and not the `blood` which humans have.
However, the dalail were short and I would advise a person to read a book written on this topic, one of them written by Sayyidi Imam Jalal al-Din al-Suyuti rehmatullahi `alayh, and also look at the answers in al-Fatawa al-Hadithiyyah by ibn Hajar al-Haytami and al-Yawaqit wa al-Jawahir fi Bayani `Aqaid al-Akabir by Sayyid Imam `Abd al-Wahhab al-Sha`rani rehmatullahi `alayh
wallahu ta`ala a`lam bis sawaab
[Answer provided by Mowlana Muhammed Kalim]