Which is why I always go for torrents with comments, comfirming that there aren't any viruses. uTorrent is good for comments. If you want an account there, I might be able to give you a code because I have an account.
Although it's probably likely that you won't be able to finish the torrent with no seeds, it is possible. The peers maybe have different parts of data themselves and over time the full copy can be distributed among them.