If it is your cat, cleaning out the box more often can help. Also, you can put some menthol or other cream under your nose to distract you.
No, the smell of cat litter cannot cause a miscarriage.
It could be a comfort zone for the cat, or the cat is sick. Has it been acting sick?
Cats can be afraid of the litter robot because it is a new and unfamiliar object in their environment. The noise, movement, or smell of the litter robot may be unsettling to your cat, causing fear or anxiety. It is important to give your cat time to adjust to the litter robot and provide positive reinforcement to help them feel more comfortable with it.
It can, if you have a strong sense of smell.
A strong cat urine smell in your litter box could be caused by a buildup of urine and feces, inadequate cleaning of the litter box, a dirty litter box, or a medical issue with your cat such as a urinary tract infection. Regular cleaning and maintenance of the litter box, as well as monitoring your cat's health, can help address the issue.
it could be that your cat is sick or unhappy
You can put cat litter in the litter box and allow your cat(s) and/or kitten(s) to use the litter box as their own personal toilet. Just don't forget to change the litter frequently or it will start to smell!
It is not suggested that you do. I don't even think it burns.
Cat is a feline specie which is very clean by nature and can get sick if exposed to unhygienic condition. Therefore their sperm does not smell bad.
They do stink (if you don't clean them). Especially covered litter boxes tend to stink less as the odor gets trapped inside. There are also self cleaning litter boxes, they tend to stink less as they automatically clean the litter after 20 seconds. The details of the litter boxes and a guide on how to maintain them are here: catlitterboxguide.com/3-best-litter-boxes-for-your-cat/
If your cat is sick and sleeping in the litter box, it could indicate that they are feeling very unwell or experiencing discomfort. It's important to take your cat to the vet as soon as possible to determine the underlying cause of their illness and address any health issues they may be facing. Sleeping in the litter box is not a normal behavior and should be taken seriously.
They wont care but you should still keep an eye out and observe!