lol
There's nothing that Venom could do to Flash.
I can imagine Flash going...
'Eeeww - what the hell is this thing? It's black n sticky, n yuck...!'
All the while that Flash is spoutning crap, Venom keeps trying to grab him and Flash just absent-mindedly dodges again and again.
Flash then starts beating Venom over the head with chairs on stuff until he's knocked out.
Ten chairs/tables/bicycles etc a second oughta do it, lol.
Quicksilver would be dead on his own.
But with Flash here, he could just sit back and laugh.
Well I never said Flash would accept his offer, lol.
In the time it would take Quiksilver to say the word taco, Flash would figure out what he was saying, decide he wanted pizza instead, run to Italy, pick up some fresh ingredients, heat them in an oven (which he powers himself), run back, and eat the whole thing.