If people actually declared everything that *could* fall into the 9 Dangerous Goods classes then the entire system will slow to a crawl.
an aerosol deodorant can is a class 2 (gas)
perfume, after-shave and spirits are class 3 (flammable liquid)
vaseline, lipstick, muesli-bars, clothes are class 4 (flammable solid)
shoe polish is class 3 (flammable liquid) or class 4 (flammable solid)
all batteries are at least a class 8 (corrosive) and maybe class 6 (toxic)
Depending on my mood I am a class 9 (noxious or irritating) and in winter can be a class 6 (infectious substance)
heck., a magnetic compass and laptop hard-disks are class 9 (magnetised material)
It's all well and good to have definitions for DGs and security prohibited items, but problems arise when barrier people unthinkingly enforce such broad definitions.
And just in., another example of security theatre where our pollies, their families and staff and public servants do not need to be screened when entering the Canberra Parliament House.
Senator Bill Heffernan smuggles fake 'pipe bomb' into Parliament House, says building 'no longer secure' - ABC News (Australian Broadcasting Corporation)
Liberal Senator Bill Heffernan smuggles pipe bomb into federal parliament | News.com.au