Failing to read from DHT22 when multiple components on breadboard
First off:
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Hopefully we can help you here, but you really need to include a lot more information in your question. You really haven't given us anything to work on here and should include as a minimum:

what other sensors you are using, including protocols and model numbers
a circuit diagram (or a very detailed verbal description of your connections)
your source code including the libraries you are using (no need to list the library code, just the #include line will do)

At this early stage I would guess you are using incompatible sensors. The DHT22 is a 1-wire device, but not all 1-wire devices are the same. It would be certainly possible to run multiple protocols on one pin, but you'd really need to know what you are doing, and it would be preferable that you didn't.
It could also be that you're mixing protocols and have completely incompatible sensors clashing. Especially if you've got something else on the line that is trying to be the master.
Include some more info, with photos and/or a circuit diagram and code and hopefully we can get you on your way.