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.
The Unicode abstract character repertoire can, in theory, hold up to 1114112 characters, although many are reserved to be invalid and the rest aren't all likely to ever be assigned. Each character is coded as an integer between 0 and 1114111 (0x10ffff). For instance, capital A is coded as 65.