The good news is that, unless an animal is confined in a pillowcase (as above) or in a room with extreme amounts of smoke, inhaling secondhand marijuana smoke is not likely to lead to intoxication. If this were a concern, it would be hard to walk the streets of San Francisco without catching a secondhand buzz.
If you have a message with multiple segments (a message over 160 characters will be broken up into 160-character segments), Twilio will queue the messages and release them at the rate of one message segment per second.
There is a limit of 140 characters that you can write in one message (tweet). But then again, you can write more than one message, so you can fit in what you wanted to say. Although, I would avoid long things to say on Twitter, since it is mainly used for quick updates and short sentences.