No. It stung my eyes and it smelt and tasted horrible. The government had to issue health warnings telling people to stay indoors if they could help it, and simply not to leave the house if they were young, old, or asthmatic.
The amount of particulate matter in the air was above minimum safe levels (2000 parts per million IIRC). Prolonged exposure to levels of particulate matter above that level significantly increase risk of cancers and diseases (mainly of the lungs). But a day of it is unlikely to cause that (you've got a problem if you're a labourer in the mineral industry who works in such circumstances every day, though).
The amount moved was pretty amazing, though. About 52 million tonnes of dust was dumped over the state of NSW.