Does this sentence make sense?
For example, bags at an airport are x-rayed to see if any dangerous are inside without having to be opened and looked in each one.
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1 - You can either say "dangerous items " or "anything dangerous ", but not "any dangerous", as you need a noun to accompany the adjective "dangerous"
2 - The position of "each one" in your sentence seems wrong. General Subject-verb word order requirement is the reason here I think: subject "each one", verb "having".
For example, bags at an airport are x-rayed to see if any dangerous items are inside without each one having to be opened and looked in.