as a apprentice chemist.
i ll like to teach you how to make the deepest smoke cloud you ever seen and only for few $.
find or buy some caustic soda and some sugar.
find a recipient that will not burn like a flower pot for exemple.
mix it and light it but be carefull the heat can probably go up to 2000 degree (the heat will just happen for few seconds).
one small box of caustic soda and some sugar is enough to put a whole neighborhood in a deep smoke cloud.
enjoy
edit : don t know if it s toxic so don t heal it , put some scarff or some mask