1- Is sheesha haram ?

2- Is it permissible to do the business of selling the sheesha flavours?

3- There are some online business nowadays in which after the first purchase of the products , it is required to look for marketting, the more people that invest into the business the more you are paid for it. Is this business allowed in islam?

1- It is not haram.
2- Yes, it is permissible to do so.
3- Do not get in such gamblings.