That sound you can hear is a chorus of Aussies sneezing/sniffling as pollen levels lift across much of the country. The sun is out again in parts of southeastern Oz after La Niña-related rain last week, and that’s created the best conditions for growing grass – and growing seasonal allergy woes. It saw hayfever and asthma sufferers warned to stay indoors as pollen levels lifted from high to extreme in Canberra and parts of Victoria yesterday, and that’s set to continue over the warm week. Note: tomorrow is expected to be the worst day for hayfever sufferers. Other places getting itchy/sniffly include Sydney, Brissie, Hobart and Adelaide. November grass pollen season usually ends by Christmas, but experts say this year’s late start could see it last into January. Which makes it a good time to remind you to add a box of tissues to your shopping list…