[he can read between the lines here, and he puts on a good show of being awkward about it.]

Ah... Well, normally I wouldn't even propose such a grand theory without proof, but we're being pushed into a corner here. Some of our teammates may already be infected, and people are out for blood. Conditions are ripe for someone to spring a trap on us.

There's something to be said about having a legitimate reason to tread carefully, even if it's just based on conjecture.