SO2 HELP CE CHEM

yes. sulphur dioxide is poisonous.
it is pungent smell and is a reducing gas.
it will attact our lung if we breathe in sulphur dioxide.

YES OF COURSE...
SO2 HAVE pungent choking smell,
it is also a redeucing agent
can test with a filter paper soaked with acidified potassium dichromate solution
turn is from orange to green.

SO2 can act as blenching agent, blench by reduction.
it can use to blench delicate material,
for example, silk and wool...