Bubblecar said:

btm said:

Spiny Norman said:

Interesting question, but I suspect not many would be a great threat if they were that much larger as they wouldn’t be able to lift or move themselves. Anything used to fly, wouldn’t.

If by “bugs” they mean insects generally (my first thought was computer bugs, then listening devices, then bacteria/viruses, but they make any sense in context; bug has a specific entomological meaning (order Hemiptera.) Not all insects are bugs,) the answer’s none. They would suffocate pretty quickly; their breathing apparatus (spiracles) consists of tiny tubes through their bodies open to the air. Gas exchange is passive. This technique doesn’t scale, so above a certain (limited) size, the insects would die quickly. Even if they could overcome the problem of breathing, they couldn’t walk: their legs couldn’t hold their new weight.

Spiders don’t have spiracles; they have book lungs, lung structures with “leaves” similar to pages in a book. Once again, though, the gas exchange is passive: they don’t breathe as such. This also doesn’t scale, so spiders can’t get much bigger than they are.

Luckily all this was ignored by the giant ant and spider films of the 1950s, most of which are still cosy viewing.

probably the Y2K bug would be a major concern