What does it smell like? Smoke? Mold?

You can try a vinegar and baking soda paste. Soak the hair in white vinegar and then sprinkle on some baking soda. Let it sit for a few hours. Then wash with cold water. If it doesn't work the first time, do it again.

Thanks for the advise. She smells sour, unlike I have ever seen before.

Post Merge: Today at 05:45:16 AM

Cat litter in a bag can also do the job.
If it still stinks, try to check if it's not tail rust. Otherwise you might want to pop the head open for a good clean inside.

Thansk for the advice. I do have cat litter at home. She doesn't appear to have tail rust but I haven't opened her up.

Last year one of my friends got me this journal with other images, Memo pads, activity pad and stickers from Five Below.
https://poshmark.com/listing/Hasbro-My-Little-Pony-notebook-63b20ca924237a8c3754c0d7
https://www.ebay.com/itm/285792528495

I can't even...
 

This spring has been weird, it's like winter was overly long and then we skipped spring altogether and went straight into summer.   Now we're having the first heatwave of the season. Well, heat by Finnish standards - anything above 25 Celsius (77 F) is considered hot here. It's been constantly above that since last week, and the upcoming week is not going to be any cooler. Most Finns are probably enjoying it now after the long winter, me too, but TBH it's uncharacteristic to have these temperatures in May. Luckily we got a bit of rain over the weekened, and luckily it's still cool during the night as we don't have AC. It gets more problematic when the temperature won't go below 20 degrees during the night... then it gets impossible to keep the indoor temperature comfortable and I'll have trouble sleeping.

Maple Summer is a lovely name! Congrats on your recent addition

I think when I finally get one I would love the name chestnut